Annual report pursuant to Section 13 and 15(d)

Contractual Maturities (Details)

v3.22.2
Contractual Maturities (Details)
Apr. 30, 2022
USD ($)
Contractual Maturities Period 1 [Member]  
Money market funds $ 799,936
Asset-backed securities
Corporate bonds 21,702,648
Total 22,502,584
Contractual Maturities Period 2 [Member]  
Money market funds
Asset-backed securities 2,861,559
Corporate bonds 18,877,593
Total 21,739,152
Contractual Maturities Period 3 [Member]  
Money market funds
Asset-backed securities
Corporate bonds 548,633
Total 548,633
Contractual Maturities Total [Member]  
Money market funds 799,936
Asset-backed securities 2,861,559
Corporate bonds 41,128,874
Total $ 44,790,369